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JKE TW' NVSUR, F  f5 NFUI AKNV TUNI AG"H HAHC, AGKCHO UNFUI HRUAKHO' ,AB"J' GNW ,F"D-,N"U/  f5  ]14[AHPUG FCA VNZCJ' CUGZ MCTI USUS DRCR' N,NYHEV CJN"S' ,AB"J )CSPUX(/   f5  ]15[NEUR ESNUI KAHY, TBCKAUO TPRHO CAU", V,AC". CGBHI HO AGAV AKNV' SUS DRCR   f5 UCUGZ MCTI )CVFBV(/  f5  &f5 @[16]Rabbinical Mathematics and Astronomy, Williams Moses Feldman, Hermon B &f5 Press, New-York: 1931. &f5 @[17]Das Mathematische im Talmud, Benedict Zuckermann, Hepner, Breslau: 1878. &f5 @[18]On the Rabbinical Approximation of p, Boaz Tsaban and David Garber, Historia B # &f5 Mathematica 25 (1998), pp.75-84. 1&f5 @[19]A mechanical derivation of the area of the sphere,' David Garber and Boaz  ? &f5 Tsaban (in preparation). M&f5 @[20]The proof of Rabbi Abraham bar Hiya, Victor .J. Katz, Boaz Tsaban and David  [ &f5 Garber (in preparation). if5  wf5  f  f